- Not to be confused with Shadow the Hedgehog.
The Shadows are similar in appearance to Mephiles' crystalline form, except their heads are triangular with a single purple eye on their face, and have two hands with claw-like fingers.
These creatures fly around the arena, surrounding Shadow (or E-123 Omega during the second phase of the boss fight). Individual Shadows are harmless alone, but once their group is large enough, they will launch themselves at Shadow and cling on to him. They can be avoided and destroyed easily by using the Spin Kick. The greater the number of Shadows holding on, the stronger their glow will resonate. This glow represents their power, and once it fills up completely they will all explode at once, causing massive damage to Shadow. This can be evaded by performing a Chaos Attack as the explosion happens. In the second boss fight, they will launch themselves at Shadow from the ceiling.
Shadows can also merge together to become Mephiles's monstrous form.